scholarly journals Near Absence ofAgrilus bilineatusfrom an Oak Decline Event in the Ozark Mountains of Arkansas

2014 ◽  
Vol 97 (2) ◽  
pp. 821-823 ◽  
Author(s):  
Vanessa L. Muilenburg ◽  
Laurel J. Haavik ◽  
Fred M. Stephen
Keyword(s):  
2021 ◽  
Vol 485 ◽  
pp. 118948
Author(s):  
Jasen P. Finch ◽  
Nathan Brown ◽  
Manfred Beckmann ◽  
Sandra Denman ◽  
John Draper
Keyword(s):  

2018 ◽  
Vol 417 ◽  
pp. 122-136 ◽  
Author(s):  
Joaquín Duque-Lazo ◽  
Rafael María Navarro-Cerrillo ◽  
Hein van Gils ◽  
Thomas A. Groen

2019 ◽  
Vol 151 (6) ◽  
pp. 738-744
Author(s):  
Jessica A. Hartshorn ◽  
Larry D. Galligan ◽  
Fred M. Stephen

AbstractEnaphalodes rufulus (Haldeman) (red oak borer; Coleoptera: Cerambycidae) is a native wood borer that colonises and develops in oaks (Quercus Linnaeus; Fagaceae) across southeastern Canada and the eastern United States of America. It is rarely considered a pest because it normally occurs at low population density levels in stressed or dying oak trees. In the late 1990s and early 2000s there was a large, historically unique outbreak of E. rufulus in the Ozark mountains of Arkansas and Missouri, United States of America. This outbreak provided an opportunity to investigate within-tree spatial distribution of attacks during unusually high insect population levels. Fifty trees from northern Arkansas were felled and destructively sampled. The locations of attack sites by female E. rufulus were standardised across varying heights and diameters for comparison across trees. Attack sites showed a significant clustered pattern within trees. Attack sites were aggregated towards the lower and middle bole, and on the south-facing side of trees. This pattern has been seen in other insects, including wood borers, and is potentially related to differences in temperature. These patterns of ovipositional behaviour in outbreak situations have implications for E. rufulus resource partitioning and facultative intraguild predation among larvae.


Proceedings ◽  
2019 ◽  
Vol 30 (1) ◽  
pp. 24
Author(s):  
Giannakis ◽  
Alani ◽  
Lantini ◽  
Mortimer ◽  
Tosti

Emerging infectious diseases (EIDs) of trees. [...]


1996 ◽  
Vol 20 (2) ◽  
pp. 74-80 ◽  
Author(s):  
Michael G. Shelton ◽  
Robert F. Wittwer

Abstract Seed production of shortleaf pine (Pinus echinata Mill.) was monitored from 1965 to 1974 to determine the periodicity of seed crops in both woods-run stands and seed-production areas. One bumper and two good seed crops occurred during the 9-yr period. The two largest crops occurred in successive years, then seed production was low for 4 yr before another good crop occurred. Mean annual seed production ranged from 84,000/ac in the western Ouachitas to 167,000/ac in seed-production areas in the southern Ozarks. Certain stand-level variables significantly influenced seed production. Seed production was positively related to stand age and negatively related to pine and hardwood basal areas; although frequently significant, no consistent relationship occurred with stand elevation. Results indicate that shortleaf pine seed production will usually be adequate for natural regeneration within most of the study area. South. J. Appl. For. 20(2):74-80.


2019 ◽  
Vol 65 (No. 12) ◽  
pp. 481-492 ◽  
Author(s):  
Mehdi Zandebasiri ◽  
Hrald Vacik ◽  
Daniel Etongo ◽  
Yasmin Dorfstetter ◽  
Javad Soosani ◽  
...  

Oak decline has been observed periodically in the different parts of the world. We conducted this study to evaluate the project control in this phenomenon. In this paper, the project control methods have proposed to be useful tools to deal with oak decline. The aim of the study is twofold: (i) define and schedule a set of activities and determine times for those activities in the Control of Forest Decline Project (CFDP) using the Project Evaluation and Review Technique (PERT) method; (ii) apply the Critical Path Method (CPM) within the context on how to reduce the project time by increasing operating costs and crashing the activities. In crisis management, “golden time” is defined for doing activities and controlling the crisis, which has a greater role than other times. The analysis confirmed that the problem of forest decline is an ecological problem and its root lies in participatory management with the local community. We also found that the time crashing is not economically efficient to the CFDP except for two activities: public information and stakeholder analysis.


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